[mythtv-users] Nova-t 500 blank screen requiring reboot

Alain Brossard mythuser at alain.homeunix.org
Sun Sep 2 15:24:08 UTC 2007


Hi,

   Do you have the following message in /var/log/messages?

Sep  1 23:36:15 mytv kernel: [ 4856.480000] usb 3-1: USB disconnect, 
address 2
Sep  1 23:36:19 mytv kernel: [ 4860.024000] mt2060 I2C write failed

    Every time I get that USB disconnect, I need to restart the back-end 
which seems to reload the T-500 drivers. I wrote a script which does 
this check every 5 seconds. Let me know if you want it. Here's the 
output I then get in messages:

Aug 29 21:41:54 mytv kernel: [175485.232000] dvb-usb: Hauppauge Nova-T 
500 Dual DVB-T successfully deinitialized and disconnected.
Aug 29 21:41:54 mytv kernel: [175485.476000] usb 2-1: new high speed USB 
device using ehci_hcd and address 3
Aug 29 21:41:54 mytv kernel: [175485.624000] usb 2-1: configuration #1 
chosen from 1 choice
Aug 29 21:41:54 mytv kernel: [175485.624000] dvb-usb: found a 'Hauppauge 
Nova-T 500 Dual DVB-T' in warm state.
Aug 29 21:41:54 mytv kernel: [175485.624000] dvb-usb: will pass the 
complete MPEG2 transport stream to the software demuxer.
Aug 29 21:41:54 mytv kernel: [175485.624000] DVB: registering new 
adapter (Hauppauge Nova-T 500 Dual DVB-T)
Aug 29 21:41:54 mytv kernel: [175485.732000] DVB: registering frontend 0 
(DiBcom 3000MC/P)...
Aug 29 21:41:54 mytv kernel: [175485.732000] MT2060: successfully 
identified (IF1 = 1220)
Aug 29 21:41:55 mytv kernel: [175486.280000] dvb-usb: will pass the 
complete MPEG2 transport stream to the software demuxer.
Aug 29 21:41:55 mytv kernel: [175486.280000] DVB: registering new 
adapter (Hauppauge Nova-T 500 Dual DVB-T)
Aug 29 21:41:55 mytv kernel: [175486.284000] DVB: registering frontend 2 
(DiBcom 3000MC/P)...
Aug 29 21:41:55 mytv kernel: [175486.284000] MT2060: successfully 
identified (IF1 = 1220)
Aug 29 21:41:55 mytv kernel: [175486.832000] dvb-usb: Hauppauge Nova-T 
500 Dual DVB-T successfully initialized and connected.


    Well that was true until yesterday when I installed the latest 
v4l-dvb drivers. Now restarting the back end doesn't reload the drivers, 
instead I get an infinite number of :

Sep  1 23:36:22 mytv kernel: [ 4863.832000] mt2060 I2C write failed
Sep  1 23:36:22 mytv kernel: [ 4863.844000] mt2060 I2C write failed (len=2)
Sep  1 23:36:22 mytv kernel: [ 4863.844000] mt2060 I2C write failed (len=6)
Sep  1 23:36:22 mytv kernel: [ 4863.844000] mt2060 I2C read failed
Sep  1 23:36:22 mytv kernel: [ 4863.852000] mt2060 I2C read failed
Sep  1 23:36:22 mytv kernel: [ 4863.860000] mt2060 I2C read failed

  The new v4l-dvb code also now tries to read the remote and fails, 
printing 2 lines in the log file at each attempt (150 msec.)! I changed 
the code rather quickly to avoid this.

  Hence I'm going back to the old version.

latest  linux/drivers/media/dvb/dvb-usb/dib0700_devices.c is copyright 2007
the one from June was copyright 2006. No human readable version and I 
don't know how to use hg.

Alain

John Taylor wrote:
> Hi,
>
> Running mythtv 0.20.20070821-1 on Ubuntu desktop kernel
> 2.6.20-16-generic with 1 Nova T 500 DVB dual tuner PCI card (non
> diversity version model 289 SL-289-V2.1-UK). Also have an Epia M
> diskless frontend running minimyth
>
> Card was installed according to the wiki:
> http://www.mythtv.org/wiki/index.php/Hauppauge_WinTV_Nova-T_500_PCI
>
> on a fresh install of Ubuntu
>
> My problem is that the system works absolutely fine on first boot, but
> after a day or so, the tuner seems to drop out. I get a black screen
> when watching live tv on all channels, the OSD telling me I've got a
> signal strength of 49-51% and alternates between lock and partial
> lock. Programs will not record when the system is in this state. The
> problem fixes itself when the backend is rebooted
>
> Log file says:
> 2007-09-02 09:31:35.987 MainServer::HandleAnnounce Monitor
> 2007-09-02 09:31:35.992 adding: livingroom as a client (events: 0)
> 2007-09-02 09:31:36.000 MainServer::HandleAnnounce Monitor
> 2007-09-02 09:31:36.001 adding: livingroom as a client (events: 1)
> 2007-09-02 09:31:36.022 MainServer::HandleAnnounce Playback
> 2007-09-02 09:31:36.023 adding: livingroom as a client (events: 0)
> 2007-09-02 09:31:36.032 TVRec(2): Changing from None to WatchingLiveTV
> 2007-09-02 09:31:36.041 TVRec(2): HW Tuner: 2->2
> 2007-09-02 09:32:20.558 TVRec(2): PauseRecorder() called with no recorder
> 2007-09-02 09:32:20.696 Finished recording News 24 Sunday: channel 1001
> 2007-09-02 09:32:20.712 Preview Error: Previewer file
> '/recordings/1001_20070902093136.mpg' is not valid.
> 2007-09-02 09:32:45.653 TVRec(2): PauseRecorder() called with no recorder
> 2007-09-02 09:32:45.822 Finished recording News 24 Sunday: channel 1001
> 2007-09-02 09:32:45.841 Preview Error: Previewer file
> '/recordings/1001_20070902093220.mpg' is not valid.
>
> Is this a card, driver or signal problem?
>
> Any help very gratefully received!
>
> Regards
>
> John
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>
>   


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